CN104612674B - Simulation fractured-cavernous carbonate reservoir is handled up experimental provision and method - Google Patents
Simulation fractured-cavernous carbonate reservoir is handled up experimental provision and method Download PDFInfo
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- CN104612674B CN104612674B CN201510046779.5A CN201510046779A CN104612674B CN 104612674 B CN104612674 B CN 104612674B CN 201510046779 A CN201510046779 A CN 201510046779A CN 104612674 B CN104612674 B CN 104612674B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Handled up experimental provision and method the invention provides one kind simulation fractured-cavernous carbonate reservoir, described device includes rock core handling device, and rock core handling device is connected with gas piston container, crude oil piston container and stratum water piston container；Methods described includes preparatory stage, injected media stage and discharge fluid stage.A kind of simulation fractured-cavernous carbonate reservoir of the invention is handled up experimental provision and method, can simulate the situation of handling up of fractured-cavernous carbonate reservoir under formation conditions.
Description
Technical field
The present invention relates to a kind of experimental provision and method for simulating oil reservoir, more particularly to a kind of simulation fracture hole type carbonate
Shale oil hides handle up experimental provision and method.
Background technology
Fractured-cavernous carbonate reservoir is general based on hole, seam, hole interaction development, and anisotropism is extremely strong.At present, fracture hole type
Carbonate Reservoir is faced with oil well and crosses that early leaving, low reserves exploitation ability, shortage of natural, waterflood efficiency be low, oil reservoir is whole
The problems such as body recovery ratio is relatively low.Handle up to improve the recovery ratio of fractured-cavernous carbonate reservoir for oil medium using injection, have
Incomparable advantage.The effect of bottom water is an important factor in order handling up of influence, category blowdown of handling up, compared to
Conventional waterflooding develops oil fields, and oil reservoir pressure drop is big, and edge-bottom water is easier coning and floods oil reservoir, increases cost of winning, reduces oil reservoir and moves
With degree and oil recovery.The difference at completion position, also can produce important influence to throughput prediction.Ground in current interior
In studying carefully, simulation bottom water fractured-cavernous carbonate reservoir difference completion position handling device and analogue experiment method be technological difficulties it
One.
The content of the invention
In order to solve the problems, such as lab simulation fractured-cavernous carbonate reservoir throughput prediction, the present invention provides a kind of simulation seam
Hole type Carbonate Reservoir is handled up experimental provision and method, using the experimental provision and method, can be simulated in formation condition
The situation of handling up of lower fractured-cavernous carbonate reservoir.
The technical solution adopted for the present invention to solve the technical problems is：One kind simulation fractured-cavernous carbonate reservoir is handled up
Experimental provision, described device includes rock core handling device, and rock core handling device is connected with gas piston container, crude oil piston container
With stratum water piston container.
Rock core handling device is the tubular of closed at both ends, and rock core handling device is to be vertically arranged, the side of rock core handling device
Wall is disposed with top connection, center tap and lower contact from top to bottom, and the bottom of rock core handling device is provided with liquid inlet.
The outlet of gas piston container and the top connection of rock core handling device or the center tap or it is described under
Joint is connected, the liquid inlet of the outlet of crude oil piston container and the outlet of stratum water piston container and rock core handling device
Connection.
Described device also includes back-pressure valve, and one in the top connection, the center tap and the lower contact by the
One metering pipeline is connected with back-pressure valve, and the first metering pipeline is provided with pressure equaliser.
Described device also includes oil-gas-water metering device, another in the top connection, the center tap and the lower contact
One is connected by the second metering pipeline with oil-gas-water metering device, and back-pressure valve is arranged on the second metering pipeline.
Carbonate rock fragment is filled with rock core handling device.
Described device also includes the gas cylinder, compressor and the gas-gas inflator that are sequentially connected, compressor and gas piston
The outlet connection of container.
Described device also includes constant-flux pump and six-way valve, and an arrival end of six-way valve is connected with constant-flux pump, gas piston
The entrance of the entrance, the entrance of crude oil piston container and stratum water piston container of container connects with three ports of export of six-way valve respectively
Connect.
Handled up experimental technique present invention also offers one kind simulation fractured-cavernous carbonate reservoir, methods described includes：
Step 1. preparatory stage：Make to be full of in gas piston container and be for the pressure in oil medium, and gas piston container
Scheduled pressure value；Make in crude oil piston container full of crude oil；Make in the water piston container of stratum full of stratum water；According to what is simulated
The geological condition of fractured-cavernous carbonate reservoir, fills carbonate rock fragment, and vacuumize in rock core handling device；Pressure is put down
Crude oil of the injected slurry volume less than the volume of pressure equaliser in weighing apparatus device；
The step 2. injected media stage：Make the crude oil in crude oil piston container full of rock core handling device, when rock core is handled up
When pressure in device rises to the scheduled pressure value, the connection of rock core handling device and crude oil piston container is disconnected；Connection is flat
Stream pump and gas piston container, when the pressure in gas piston container is big as the pressure in rock core handling device, connection
Gas piston container, rock core handling device, pressure equaliser and back-pressure valve, back-pressure valve Stress control is in the predetermined pressure
Value, is treated to be swallowed for oil medium in coring device of handling up, and closes the run switch of constant-flux pump, and six-way valve, high-pressure-resistant air are disconnected successively
The connection of body piston container, pressure equaliser and back-pressure valve；
Step 3. discharge fluid stage：After placing a period of time, the pressure of back-pressure valve is adjusted to less than the predetermined pressure
Value, connection constant-flux pump, six-way valve and stratum water piston container, when the pressure in the water piston container of stratum rises to the predetermined pressure
During value, stratum water piston container and rock core handling device and oil-gas-water metering device, the fluid stream in rock core handling device are connected
Enter in oil-gas-water metering device, measured by oil-gas-water metering device.
The beneficial effects of the invention are as follows the situation of handling up of fractured-cavernous carbonate reservoir under formation conditions can be simulated.
Brief description of the drawings
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is that simulation fractured-cavernous carbonate reservoir of the invention is handled up the structural representation of experimental provision；
Fig. 2 is the structural representation of rock core handling device of the invention；
Fig. 3 be test an oil reservoir top nitrogen injection handle up adopt liquid performance graph；
Fig. 4 is to test the Production development curve that an oil reservoir top nitrogen injection is handled up；
Fig. 5 be test two oil reservoirs middle part nitrogen injection handle up adopt liquid performance graph；
Fig. 6 is to test the Production development curve that two oil reservoirs middle part nitrogen injection is handled up；
Fig. 7 be test three oil reservoir bottom nitrogen injections handle up adopt liquid performance graph；
Fig. 8 is to test the Production development curve that three oil reservoir bottom nitrogen injections are handled up.
Description of reference numerals：
1. gas cylinder, 2. compressor, 3. gas-gas inflator, 4. gas piston container, 5. crude oil piston container, 6. stratum
Water piston container, 7. rock core handling device, 8. pressure equaliser, 9. back-pressure valve, 10. oil-gas-water metering device, 11. 6 lead to
Valve, 12. constant-flux pumps, 13. valves, 14. valves, 15. valves, 16. valves, 17. valves, 18. valves, 19. valves, 20. valves,
21. valves, 22. valves, 23. valves, 24. valves, 25. valves, 26. valves, 100. baking ovens.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now control illustrates this hair
Bright specific embodiment.
As shown in figure 1, the present invention proposes a kind of simulation fractured-cavernous carbonate reservoir handling up experimental provision, described device
Including the rock core handling device 7 for simulating fractured-cavernous carbonate reservoir, rock core handling device 7 is connected with gas piston container
4th, crude oil piston container 5 and stratum water piston container 6.
Handled up during simulated experiment fractured-cavernous carbonate reservoir is carried out, according to experimental procedure, gas piston holds
Device 4, crude oil piston container 5 and stratum water piston container 6 are respectively to supply high pressure nitrogen, crude oil and ground in rock core handling device 7
Layer water, and the simulated experiment that fractured-cavernous carbonate reservoir is handled up is completed in rock core handling device 7, so as to realize in laboratory
The interior situation of handling up that can simulate fractured-cavernous carbonate reservoir under formation conditions.In by changing gas piston container 4
For oil medium, that is, change in experimentation to rock core handling device 7 supply for oil medium, for example nitrogen, carbon dioxide,
Water or other complex medias etc., can carry out the different fractured-cavernous carbonate reservoirs for oil medium and handle up simulated experiment.Gas
Body piston container 4, crude oil piston container 5, stratum water piston container 6 and rock core handling device 7, and the connecting tube between them
Line, being capable of high pressure resistant, resistance to carbon dioxide and corrosion-resistant.It is therein high pressure resistant, refer to that 60 megapascal (MPa)s can be born often putting down
The high pressure of square inch, it is not limited to 60 megapascal (MPa)s high pressure per square inch can be born.
In a feasible implementation method as shown in Figure 2, rock core handling device 7 is the tubular of closed at both ends, rock core
To be vertically arranged, the side wall of rock core handling device 7 is disposed with for being carried out with high pressure resistant pipeline handling device 7 from top to bottom
The top connection of connection, center tap and lower contact, the bottom of rock core handling device 7 is provided with liquid inlet.By by gas piston
Container 4, crude oil piston container 5 and stratum water piston container 6 are connected to the diverse location of rock core handling device 7, realize different complete
The fractured-cavernous carbonate reservoir at well position (i.e. three differences handle up position) is handled up simulated experiment.
Particularly, the top connection of the outlet of gas piston container 4 with rock core handling device 7 or the center tap
Or lower contact connection, the outlet of crude oil piston container 5 and the outlet of stratum water piston container 6 and rock core handling device 7
The liquid inlet connection.
Discharge fluid for the ease of simulated experiment of handling up fractured-cavernous carbonate reservoir is measured, and described device is also
Including back-pressure valve 9, one in the top connection, the center tap and the lower contact is measured pipeline and back-pressure valve by first
9 connections, the first metering pipeline is provided with pressure equaliser 8.In a feasible implementation method, described device is also wrapped
Oil-gas-water metering device 10 is included, another in the top connection, the center tap and the lower contact passes through the second gauge line
Line is connected with oil-gas-water metering device 10, and back-pressure valve 9 is arranged on the second metering pipeline.Wherein, pressure equaliser 8 is used
Pressure when balance is handled up in rock core handling device 7, back-pressure valve 9 is used to control the pressure in rock core handling device 7.Pressure is put down
Weighing apparatus device 8, back-pressure valve 9 and oil-gas-water metering device 10, and connecting pipeline between them and they and rock core handling device 7
Between connecting pipeline, being capable of high pressure resistant, resistance to carbon dioxide and corrosion-resistant.Wherein, rock core handling device 7, pressure balance dress
Putting 8, back-pressure valve 9 and oil-gas-water metering device 10 can be arranged in baking oven 100.
As shown in figure 1, described device of the invention also includes the gas cylinder 1, the supercharging of the gentle gas of compressor 2 that are sequentially connected
Pump 3, compressor 2 is connected with the outlet of gas piston container 4；The top of gas cylinder 1 is provided with for measuring in gas cylinder 1
The pressure gauge of pressure, the top of gas piston container 4 is provided with the pressure gauge for measuring pressure in gas piston container 4.It is high
Air bottle 1 (uses nitrogen, it is also possible to use it to the gas that gas piston container 4 is provided for handling up in the present embodiment
He replaces oil medium), compressor 2 and gas-gas inflator 3 are used for gas boosting, are then stored in gas piston container 4, gas
The pressure gauge that the pressure of piston container 4 can be set by its top is measured.
Described device of the invention controls the flow of fluid, the one of six-way valve 11 by six-way valve 11 and constant-flux pump 12 simultaneously
Individual arrival end is connected with constant-flux pump 12, and the entrance of gas piston container 4, the entrance of crude oil piston container 5 and stratum water piston hold
The entrance of device 6 is connected with three ports of export of six-way valve 11 respectively；5th port of six-way valve 11 is connected with pressure gauge.
In experimentation, when gas enters rock core handling device 7, due to the effect of pressure difference, internal fluid can enter
Pressure equaliser 8, the fluid of the piston base of pressure equaliser 8 can be flowed out due to differential pressure action.Filled out in rock core handling device 7
Fill a certain proportion of carbonate rock sillar.The top of rock core handling device 7 is provided with for measuring pressure in rock core handling device 7
Pressure gauge.Pressure equaliser 8 is connected with rock core handling device 7, the supplementary information of simulated formation fluid in discharge fluid,
The bottom connection stratum water piston container 6 of rock core handling device 7, the flow of stratum water is controlled by constant-flux pump 12.Rock core is handled up
The flow of the discharge fluid of device 7 is measured by oil-gas-water metering device 10, and wherein the flow of gas is carried out by fluid-discharge therapy
Metering.
Handled up experimental technique the invention allows for one kind simulation fractured-cavernous carbonate reservoir, methods described includes：
Step 1. preparatory stage；Make in gas piston container 4 full of for the pressure in oil medium, and gas piston container 4
It is scheduled pressure value；Make in crude oil piston container 5 full of crude oil；Make stratum water piston container 6 interior full of stratum water；According to institute's mould
The geological condition of the fractured-cavernous carbonate reservoir of plan, the filling carbonate rock fragment in rock core handling device 7, and vacuumize；
Crude oil of the injected slurry volume less than the volume of pressure equaliser 8 in pressure equaliser 8；
The step 2. injected media stage；Make the crude oil in crude oil piston container 5 full of rock core handling device 7, when rock core is gulped down
When telling the pressure in device 7 and rising to scheduled pressure value, the connection of rock core handling device 7 and crude oil piston container 5 is disconnected；Connection is flat
Stream pump 12 and gas piston container 4, when the pressure in gas piston container 4 is big as the pressure in rock core handling device 7,
Connection gas piston container 4, rock core handling device 7, pressure equaliser 8 and back-pressure valve 9, the Stress control of back-pressure valve 9 is described
Scheduled pressure value, treats to be swallowed for oil medium and handles up in coring device 7, closes the run switch of constant-flux pump 12, six is disconnected successively and is led to
The connection of valve 11, high pressure resistant gas piston container 4, pressure equaliser 8 and back-pressure valve 9；
Step 3. discharge fluid stage；Place after a period of time (after boiling in a covered pot over a slow fire well for a period of time), the pressure of back-pressure valve 9 is adjusted
To being less than the scheduled pressure value, connection constant-flux pump 12, six-way valve 11 and stratum water piston container 6, when stratum water piston container 6
When interior pressure rises to the scheduled pressure value, connection stratum water piston container 6 is filled with rock core handling device 7 and oil-gas-water metering
10 are put, the fluid in rock core handling device 7 is flowed into oil-gas-water metering device 10, is measured by oil-gas-water metering device 10.
Be exemplified below carries out reality using a kind of fractured-cavernous carbonate reservoir experimental technique of handling up of simulating of the invention
The experimental result tested.
In the specific embodiment that such as Fig. 1 and Fig. 2 are, the main body of coring device 7 of handling up is that an internal diameter is
65 millimeters, the stainless steel cylinder that external diameter is 98 millimeters, the length of cylinder are 700 millimeters, and the upper and lower ends of cylinder have the depth to have 20
The external screw thread of millimeter, a diameter of 6 are provided with apart from bottom of cylinder at respectively 50 millimeters, 350 millimeters, 650 millimeters of distances
The welding point of millimeter, i.e. top connection, center tap and lower contact, the roughness of cylinder internal-and external diameter is 3.2 microns.
Gas cylinder 1, compressor 2 and gas-gas inflator 3 are sequentially connected, and compressor 2 connects with the outlet of gas piston container 4
Connect, the entrance of gas cylinder 1 is provided with valve 13, valve 14 is provided between compressor 2 and gas piston container 4, gas is lived
The outlet for filling in container 4 is provided with valve 15.
The outlet of gas piston container 4 is connected with one end of high pressure resistant pipeline, and one end of the high pressure resistant pipeline is set
The other end for having valve 16, the high pressure resistant pipeline is provided with valve 22；The outlet of crude oil piston container 5, stratum water piston hold
The outlet of device 6 is connected with the liquid inlet of rock core handling device 7 by high pressure resistant pipeline, and crude oil piston container 5 goes out
Mouth is provided with valve 17, and the outlet of stratum water piston container 6 is provided with valve 18, the liquid inlet of rock core handling device 7
It is provided with valve 24.
One arrival end of six-way valve 11 is connected with constant-flux pump 12, and the bottom inlet of gas piston container 4, crude oil piston hold
The entrance of the entrance of device 5 and stratum water piston container 6 is connected with three ports of export of six-way valve 11 respectively；Gas piston container 4
Bottom inlet be provided with valve 19, the bottom inlet of crude oil piston container 5 is provided with valve 20, stratum water piston container 6
Bottom inlet is provided with valve 21.
One in the top connection, the center tap and the lower contact is sequentially connected pressure by the first metering pipeline
Bascule 8, back-pressure valve 9, another in the top connection, the center tap and the lower contact is by the second metering pipeline
It is sequentially connected back-pressure valve 9 and oil-gas-water metering device 10.One end that the second metering pipeline is connected with rock core handling device 7 sets
It is equipped with valve 23.The entrance of pressure equaliser 8 is provided with valve 25, and the outlet of pressure equaliser 8 is provided with valve 26.
Experiment one.Oil reservoir top nitrogen injection is handled up, and the other end of the high pressure resistant pipeline connects the upper of rock core handling device 7
Joint.So that the scheduled pressure value is 40 megapascal (MPa)s as an example.
Step 1：All valves are closed before experiment.A certain proportion of carbonic acid will be inserted in rock core handling device 7
Rock salt fragment, is vacuumized, and fills crude oil in crude oil piston container 5, and stratum water, pressure balance are filled in stratum water piston container 6
Load the crude oil of its volume half in device 8.Successively open valve 13, valve 14, valve 15, the power switch of compressor 2 and
The power switch of gas-gas inflator 3, makes to enter by compressor 2 and gas-gas inflator 3 from the high pressure nitrogen in gas cylinder 1
In gas piston container 4, when the pressure in container 4 increases to 40 megapascal (MPa), valve 13, valve 14, valve 15 are closed successively
With gases at high pressure by compressor 2 and the power switch of gas-gas inflator 3；
Step 2：The power switch of constant-flux pump 12 is opened, the flow velocity of constant-flux pump 12 is adjusted to 5 milliliters of per minute, startup optimizations
Switch, opens six-way valve 11, valve 20, valve 17, valve 24, valve 25, valve 26, when in the port of export of back-pressure valve 9 successively
When thering is liquid to flow out, valve 26 is closed；When the pressure of rock core handling device 7 rises to 40MPa, the fortune of constant-flux pump 12 is closed successively
Row switch, six-way valve 11, valve 20, valve 17 and valve 24；Start the run switch of constant-flux pump 12, six-way valve is opened successively
11st, valve 19, valve 15, valve 16, when the pressure in high pressure resistant gas piston container 4 and the pressure one of rock core handling device 7
When sample is big, the Stress control now of back-pressure valve 9 opens valve 22, valve 25, valve 26 successively in 40 megapascal (MPa)s, makes nitrogen
Swallow in coring device 7 of handling up, after 24 minutes, run switch, six-way valve 11, the valve 19, valve of constant-flux pump 12 are closed successively
15th, valve 16, valve 22, valve 25, valve 26；
Step 3：After 24 hours (boil in a covered pot over a slow fire well time be 1 day, the cycle 1 time of handling up), now the pressure of back-pressure valve 9 is adjusted to 10 MPas
This card, 3 milliliters of per minute, run switch of startup constant-flux pump 12 are adjusted to by the flow velocity of constant-flux pump 12, and six-way valve 11, valve is opened successively
Door 21, when the pressure of stratum water piston container 6 rises to 40 megapascal (MPa), opens valve 18, valve 24, valve 23 successively, makes
The fluid handled up in coring device 7 spues, and is measured by oil-gas-water metering device 10.
Wherein, 120 milliliters of nitrogen injection, experimental temperature is 60 degrees Celsius, and bottom water injection rate is 3 milliliters per minute, real
Test result as shown in Figure 3 and Figure 4, Fig. 3 be in this experiment one oil reservoir top nitrogen injection handle up adopt liquid performance graph, Fig. 4 is this
The Production development curve that oil reservoir top nitrogen injection is handled up in experiment one.
Handle up to be handled up when experimental result may determine that 20 minutes according to oil reservoir top nitrogen injection and terminate substantially.The experiment
Under the conditions of, oil reservoir top nitrogen injection handle up experiment handle up the stage cumulative oil production for 100.8 milliliters, recovery percent of reserves of handling up is
6.88%, oil draining rate is handled up for 0.833 in nitrogen overhead position.
Experiment two.Oil reservoir middle part nitrogen injection is handled up, in the other end connection rock core handling device 7 of the high pressure resistant pipeline
Joint.So that scheduled pressure value is 40 megapascal (MPa)s as an example.
Experimental procedure is identical with the step in experiment one.Simulation oil reservoir medium position, using analogue means of handling up, wherein,
120 milliliters of nitrogen injection, experimental temperature is 60 degrees Celsius, and water injection rate in bottom is 3 milliliters per minute, experimental result such as Fig. 5 with
Shown in Fig. 6, Fig. 5 be in this experiment two oil reservoir middle part nitrogen injection handle up adopt liquid performance graph, Fig. 6 is in this experiment two in oil reservoir
The Production development curve that portion's nitrogen injection is handled up.
Handle up to be handled up when experimental result may determine that 15 minutes according to oil reservoir middle part nitrogen injection and terminate substantially.The experiment
Under the conditions of, oil reservoir middle part nitrogen injection handle up experiment handle up the stage cumulative oil production for 86.6 milliliters, recovery percent of reserves of handling up is
5.91%, nitrogen medium position handles up oil draining rate for 0.722.
Experiment three.Oil reservoir bottom nitrogen injection is handled up, under the other end connection rock core handling device 7 of the high pressure resistant pipeline
Joint.So that scheduled pressure value is 40 megapascal (MPa)s as an example.
Experimental procedure is identical with the step in experiment one.Simulation oil reservoir lower position, using analogue means of handling up, wherein,
120 milliliters of nitrogen injection, experimental temperature is 60 degrees Celsius, and water injection rate in bottom is 3 milliliters per minute, experimental result such as Fig. 7 with
Shown in Fig. 8, Fig. 7 be in this experiment three oil reservoir bottom nitrogen injection handle up adopt liquid performance graph, Fig. 8 is in this experiment three under oil reservoir
The Production development curve that portion's nitrogen injection is handled up.
Handled up to be handled up when experimental result may determine that 20 minutes according to oil reservoir bottom nitrogen injection and terminate substantially.The experiment
Under the conditions of, oil reservoir bottom nitrogen injection handle up experiment handle up the stage cumulative oil production for 134.9 milliliters, recovery percent of reserves of handling up is
9.21%, nitrogen lower position handles up oil draining rate for 1.124.
Schematical specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, the equivalent variations made on the premise of design of the invention and principle is not departed from and modification, all should
Belong to the scope of protection of the invention.And it should be noted that each part of the invention be not limited in above-mentioned entirety should
With each technical characteristic described in specification of the invention can according to actual needs select one individually to use or select multinomial
Combine and use, therefore, the present invention naturally covers other combinations and the concrete application relevant with this case innovative point.
Claims (1)
1. a kind of simulation fractured-cavernous carbonate reservoir is handled up experimental technique, it is characterised in that the simulation fracture hole type carbonate
Shale oil is hidden experimental technique of handling up and employs simulation fractured-cavernous carbonate reservoir and handles up experimental provision；
The simulation fractured-cavernous carbonate reservoir handles up experimental provision including rock core handling device (7), rock core handling device (7)
It is connected with gas piston container (4), crude oil piston container (5) and stratum water piston container (6)；
Rock core handling device (7) is the tubular of closed at both ends, rock core handling device (7) to be vertically arranged, rock core handling device (7)
Side wall be disposed with top connection, center tap and lower contact from top to bottom, the bottom of rock core handling device (7) is provided with liquid
Carbonate rock fragment is filled with entrance, rock core handling device (7)；
The main body of rock core handling device (7) be an internal diameter be 65 millimeters, the stainless steel cylinder that external diameter is 98 millimeters, the cylinder
Length is 700 millimeters, and the upper and lower ends of the cylinder have the external screw thread that depth is 20 millimeters, the top connection and the bottom of cylinder
Distance is 650 millimeters, and the center tap is 350 millimeters with the distance of the bottom of cylinder, the distance of the lower contact and the bottom of cylinder
It it is 50 millimeters, the top connection, center tap and lower contact are the welding point of 6 millimeters of diameter, the internal-and external diameter surface of the cylinder
Roughness is 3.2 microns；
The outlet of gas piston container (4) is connected with the lower contact of rock core handling device (7), crude oil piston container (5)
Outlet and the outlet on stratum water piston container (6) are connected with the liquid inlet of rock core handling device (7)；
Described device also includes back-pressure valve (9), and the top connection is connected by the first metering pipeline with back-pressure valve (9), described the
One metering pipeline is provided with pressure equaliser (8)；
Described device also includes oil-gas-water metering device (10), and the lower contact is filled by the second metering pipeline and oil-gas-water metering
(10) connection is put, back-pressure valve (9) is arranged on the second metering pipeline；
Described device also includes the gas cylinder (1), compressor (2) and the gas-gas inflator (3) that are sequentially connected, compressor (2) and
The outlet connection of gas piston container (4)；
Described device also includes constant-flux pump (12) and six-way valve (11), and an arrival end of six-way valve (11) is with constant-flux pump (12) even
Connect, the entrance of the entrance, the entrance of crude oil piston container (5) and stratum water piston container (6) of gas piston container (4) respectively with
Three ports of export connection of six-way valve (11)；
Described device also includes baking oven (100), rock core handling device (7), pressure equaliser (8), back-pressure valve (9) and oil gas water
Metering device (10) is arranged in baking oven (100)；
The simulation fractured-cavernous carbonate reservoir experimental technique of handling up is comprised the following steps：
Step 1. preparatory stage：Make in gas piston container (4) full of for the pressure in oil medium, and gas piston container (4)
It is scheduled pressure value；Make in crude oil piston container (5) full of crude oil；Make in stratum water piston container (6) full of stratum water；According to
The geological condition of the fractured-cavernous carbonate reservoir simulated, the filling carbonate rock fragment in rock core handling device (7), and take out
Vacuum；Crude oil of the injection less than the volume of pressure equaliser (8) in pressure equaliser (8)；
The step 2. injected media stage：Make the crude oil in crude oil piston container (5) full of rock core handling device (7), when rock core is gulped down
When telling the pressure in device (7) and rising to the scheduled pressure value, rock core handling device (7) is disconnected with crude oil piston container (5)
Connection；Connection constant-flux pump (12) and gas piston container (4), when the pressure in gas piston container (4) and rock core handling device
(7) when the pressure in is equally big, connection gas piston container (4), rock core handling device (7), pressure equaliser (8) and back pressure
Valve (9), back-pressure valve (9) Stress control in treating to swallow rock core handling device (7) for oil medium, is closed in the scheduled pressure value
The run switch of constant-flux pump (12), disconnects six-way valve (11), high pressure resistant gas piston container (4), pressure equaliser (8) successively
With the connection of back-pressure valve (9)；
Step 3. discharge fluid stage：After placing a period of time, the pressure of back-pressure valve (9) is adjusted to less than the predetermined pressure
Value, connection constant-flux pump (12), six-way valve (11) and stratum water piston container (6), the pressure liter in stratum water piston container (6)
During to the scheduled pressure value, stratum water piston container (6) and rock core handling device (7) and oil-gas-water metering device are connected
(10), the fluid in rock core handling device (7) is flowed into oil-gas-water metering device (10), is counted by oil-gas-water metering device (10)
Amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046779.5A CN104612674B (en) | 2015-01-29 | 2015-01-29 | Simulation fractured-cavernous carbonate reservoir is handled up experimental provision and method |
Applications Claiming Priority (1)
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